Home / 135,080.46-186,405.77-77,738.25

Finding the Fourth Proportional to 135,080.46, 186,405.77 and 77,738.25

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Solution

The fourth proportional to 135,080.46, 186,405.77 and 77,738.25 is: 107,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,080.46 : 186,405.77 = 77,738.25 : x
  2. Step 2: Convert to fraction form
    135,080.46/186,405.77 = 77,738.25/x
  3. Step 3: Cross multiply
    135,080.46x = 186,405.77 × 77,738.25
  4. Step 4: Simplify right side
    135,080.46x = 14,490,857,961.01
  5. Step 5: Solve for x
    x = 14,490,857,961.01/135,080.46
  6. Step 6: Final answer
    x = 107,275.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.